includes/ChangesList.php

   1 <?php
   2
   3 /**
   4  * @todo document
   5  */
   6 class RCCacheEntry extends RecentChange
   7 {
   8         var $secureName, $link;
   9         var $curlink , $difflink, $lastlink , $usertalklink , $versionlink ;
  10         var $userlink, $timestamp, $watched;
  11
  12         static function newFromParent( $rc ) {
  13                 $rc2 = new RCCacheEntry;
  14                 $rc2->mAttribs = $rc->mAttribs;
  15                 $rc2->mExtra = $rc->mExtra;
  16                 return $rc2;
  17         }
  18 } ;
  19
  20 /**
  21  * Class to show various lists of changes:
  22  * - what links here
  23  * - related changes
  24  * - recent changes
  25  */
  26 class ChangesList {
  27         # Called by history lists and recent changes
  28         #
  29
  30         /**
  31         * Changeslist contructor
  32         * @param Skin $skin
  33         */
  34         function __construct( &$skin ) {
  35                 $this->skin =& $skin;
  36                 $this->preCacheMessages();
  37         }
  38
  39         /**
  40          * Fetch an appropriate changes list class for the specified user
  41          * Some users might want to use an enhanced list format, for instance
  42          *
  43          * @param $user User to fetch the list class for
  44          * @return ChangesList derivative
  45          */
  46         public static function newFromUser( &$user ) {
  47                 $sk = $user->getSkin();
  48                 $list = NULL;
  49                 if( wfRunHooks( 'FetchChangesList', array( &$user, &$sk, &$list ) ) ) {
  50                         return $user->getOption( 'usenewrc' ) ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  51                 } else {
  52                         return $list;
  53                 }
  54         }
  55
  56         /**
  57          * As we use the same small set of messages in various methods and that
  58          * they are called often, we call them once and save them in $this->message
  59          */
  60         private function preCacheMessages() {
  61                 // Precache various messages
  62                 if( !isset( $this->message ) ) {
  63                         foreach( explode(' ', 'cur diff hist minoreditletter newpageletter last '.
  64                                 'blocklink history boteditletter semicolon-separator' ) as $msg ) {
  65                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
  66                         }
  67                 }
  68         }
  69
  70
  71         /**
  72          * Returns the appropriate flags for new page, minor change and patrolling
  73          * @param bool $new
  74          * @param bool $minor
  75          * @param bool $patrolled
  76          * @param string $nothing, string to use for empty space
  77          * @param bool $bot
  78          * @return string
  79          */
  80         protected function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&nbsp;', $bot = false ) {
  81                 $f = $new ? '<span class="newpage">' . $this->message['newpageletter'] . '</span>'
  82                                 : $nothing;
  83                 $f .= $minor ? '<span class="minor">' . $this->message['minoreditletter'] . '</span>'
  84                                 : $nothing;
  85                 $f .= $bot ? '<span class="bot">' . $this->message['boteditletter'] . '</span>' : $nothing;
  86                 $f .= $patrolled ? '<span class="unpatrolled">!</span>' : $nothing;
  87                 return $f;
  88         }
  89
  90         /**
  91          * Returns text for the start of the tabular part of RC
  92          * @return string
  93          */
  94         public function beginRecentChangesList() {
  95                 $this->rc_cache = array();
  96                 $this->rcMoveIndex = 0;
  97                 $this->rcCacheIndex = 0;
  98                 $this->lastdate = '';
  99                 $this->rclistOpen = false;
 100                 return '';
 101         }
 102
 103         /**
 104          * Returns text for the end of RC
 105          * @return string
 106          */
 107         public function endRecentChangesList() {
 108                 if( $this->rclistOpen ) {
 109                         return "</ul>\n";
 110                 } else {
 111                         return '';
 112                 }
 113         }
 114
 115         protected function insertMove( &$s, $rc ) {
 116                 # Diff
 117                 $s .= '(' . $this->message['diff'] . ') (';
 118                 # Hist
 119                 $s .= $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), $this->message['hist'], 'action=history' ) .
 120                         ') . . ';
 121
 122                 # "[[x]] moved to [[y]]"
 123                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 124                 $s .= wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 125                         $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 126         }
 127
 128         protected function insertDateHeader(&$s, $rc_timestamp) {
 129                 global $wgLang;
 130
 131                 # Make date header if necessary
 132                 $date = $wgLang->date( $rc_timestamp, true, true );
 133                 $s = '';
 134                 if( $date != $this->lastdate ) {
 135                         if( '' != $this->lastdate ) {
 136                                 $s .= "</ul>\n";
 137                         }
 138                         $s .= '<h4>'.$date."</h4>\n<ul class=\"special\">";
 139                         $this->lastdate = $date;
 140                         $this->rclistOpen = true;
 141                 }
 142         }
 143
 144         protected function insertLog(&$s, $title, $logtype) {
 145                 $logname = LogPage::logName( $logtype );
 146                 $s .= '(' . $this->skin->makeKnownLinkObj($title, $logname ) . ')';
 147         }
 148
 149         protected function insertDiffHist(&$s, &$rc, $unpatrolled) {
 150                 # Diff link
 151                 if( !$this->userCan($rc,Revision::DELETED_TEXT) ) {
 152                         $diffLink = $this->message['diff'];
 153                 } else if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 154                         $diffLink = $this->message['diff'];
 155                 } else {
 156                         $rcidparam = $unpatrolled
 157                                 ? array( 'rcid' => $rc->mAttribs['rc_id'] )
 158                                 : array();
 159                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'],
 160                                 wfArrayToCGI( array(
 161                                         'curid' => $rc->mAttribs['rc_cur_id'],
 162                                         'diff'  => $rc->mAttribs['rc_this_oldid'],
 163                                         'oldid' => $rc->mAttribs['rc_last_oldid'] ),
 164                                         $rcidparam ),
 165                                 '', '', ' tabindex="'.$rc->counter.'"');
 166                 }
 167                 $s .= '('.$diffLink.') (';
 168
 169                 # History link
 170                 $s .= $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['hist'],
 171                         wfArrayToCGI( array(
 172                                 'curid' => $rc->mAttribs['rc_cur_id'],
 173                                 'action' => 'history' ) ) );
 174                 $s .= ') . . ';
 175         }
 176
 177         protected function insertArticleLink(&$s, &$rc, $unpatrolled, $watched) {
 178                 # Article link
 179                 # If it's a new article, there is no diff link, but if it hasn't been
 180                 # patrolled yet, we need to give users a way to do so
 181                 $params = ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW )
 182                         ? 'rcid='.$rc->mAttribs['rc_id']
 183                         : '';
 184                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 185                         $articlelink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '', $params );
 186                         $articlelink = '<span class="history-deleted">'.$articlelink.'</span>';
 187                 } else {
 188                     $articlelink = ' '. $this->skin->makeKnownLinkObj( $rc->getTitle(), '', $params );
 189                 }
 190                 if( $watched )
 191                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 192                 global $wgContLang;
 193                 $articlelink .= $wgContLang->getDirMark();
 194
 195                 wfRunHooks('ChangesListInsertArticleLink',
 196                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched));
 197
 198                 $s .= ' '.$articlelink;
 199         }
 200
 201         protected function insertTimestamp(&$s, $rc) {
 202                 global $wgLang;
 203                 # Timestamp
 204                 $s .= $this->message['semicolon-separator'] . ' ' . $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 205         }
 206
 207         /** Insert links to user page, user talk page and eventually a blocking link */
 208         protected function insertUserRelatedLinks(&$s, &$rc) {
 209                 if ( $this->isDeleted($rc,Revision::DELETED_USER) ) {
 210                    $s .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-user') . '</span>';
 211                 } else {
 212                   $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 213                   $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 214                 }
 215         }
 216
 217         /** insert a formatted action */
 218         protected function insertAction(&$s, &$rc) {
 219                 # Add action
 220                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 221                         // log action
 222                         if ( $this->isDeleted($rc,LogPage::DELETED_ACTION) ) {
 223                                 $s .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 224                         } else {
 225                                 $s .= ' ' . LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 226                                         $rc->getTitle(), $this->skin, LogPage::extractParams($rc->mAttribs['rc_params']), true, true );
 227                         }
 228                 }
 229         }
 230
 231         /** insert a formatted comment */
 232         protected function insertComment(&$s, &$rc) {
 233                 # Add comment
 234                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 235                         // log comment
 236                         if ( $this->isDeleted($rc,Revision::DELETED_COMMENT) ) {
 237                                 $s .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 238                         } else {
 239                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 240                         }
 241                 }
 242         }
 243
 244         /**
 245          * Returns the string which indicates the number of watching users
 246          */
 247         protected function numberofWatchingusers( $count ) {
 248                 global $wgLang;
 249                 static $cache = array();
 250                 if ( $count > 0 ) {
 251                         if ( !isset( $cache[$count] ) ) {
 252                                 $cache[$count] = wfMsgExt('number_of_watching_users_RCview',
 253                                         array('parsemag', 'escape'), $wgLang->formatNum($count));
 254                         }
 255                         return $cache[$count];
 256                 } else {
 257                         return '';
 258                 }
 259         }
 260
 261         /**
 262          * Determine if said field of a revision is hidden
 263          * @param RCCacheEntry $rc
 264          * @param int $field one of DELETED_* bitfield constants
 265          * @return bool
 266          */
 267         public static function isDeleted( $rc, $field ) {
 268                 return ($rc->mAttribs['rc_deleted'] & $field) == $field;
 269         }
 270
 271         /**
 272          * Determine if the current user is allowed to view a particular
 273          * field of this revision, if it's marked as deleted.
 274          * @param RCCacheEntry $rc
 275          * @param int $field
 276          * @return bool
 277          */
 278         public static function userCan( $rc, $field ) {
 279                 if( ( $rc->mAttribs['rc_deleted'] & $field ) == $field ) {
 280                         global $wgUser;
 281                         $permission = ( $rc->mAttribs['rc_deleted'] & Revision::DELETED_RESTRICTED ) == Revision::DELETED_RESTRICTED
 282                                 ? 'hiderevision'
 283                                 : 'deleterevision';
 284                         wfDebug( "Checking for $permission due to $field match on $rc->mAttribs['rc_deleted']\n" );
 285                         return $wgUser->isAllowed( $permission );
 286                 } else {
 287                         return true;
 288                 }
 289         }
 290 }
 291
 292
 293 /**
 294  * Generate a list of changes using the good old system (no javascript)
 295  */
 296 class OldChangesList extends ChangesList {
 297         /**
 298          * Format a line using the old system (aka without any javascript).
 299          */
 300         public function recentChangesLine( &$rc, $watched = false ) {
 301                 global $wgContLang, $wgRCShowChangedSize, $wgUser;
 302
 303                 $fname = 'ChangesList::recentChangesLineOld';
 304                 wfProfileIn( $fname );
 305
 306                 # Extract DB fields into local scope
 307                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 308                 extract( $rc->mAttribs );
 309
 310                 # Should patrol-related stuff be shown?
 311                 $unpatrolled = $wgUser->useRCPatrol() && $rc_patrolled == 0;
 312
 313                 $this->insertDateHeader($s,$rc_timestamp);
 314
 315                 $s .= '<li>';
 316
 317                 // Moved pages
 318                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 319                         $this->insertMove( $s, $rc );
 320                 // Log entries
 321                 } elseif( $rc_log_type ) {
 322                         $logtitle = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
 323                         $this->insertLog( $s, $logtitle, $rc_log_type );
 324                 // Log entries (old format) or log targets, and special pages
 325                 } elseif( $rc_namespace == NS_SPECIAL ) {
 326                         list( $specialName, $specialSubpage ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 327                         if ( $specialName == 'Log' ) {
 328                                 $this->insertLog( $s, $rc->getTitle(), $specialSubpage );
 329                         } else {
 330                                 wfDebug( "Unexpected special page in recentchanges\n" );
 331                         }
 332                 // Regular entries
 333                 } else {
 334                         wfProfileIn($fname.'-page');
 335
 336                         $this->insertDiffHist($s, $rc, $unpatrolled);
 337
 338                         # M, N, b and ! (minor, new, bot and unpatrolled)
 339                         $s .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $unpatrolled, '', $rc_bot );
 340                         $this->insertArticleLink($s, $rc, $unpatrolled, $watched);
 341
 342                         wfProfileOut($fname.'-page');
 343                 }
 344
 345                 wfProfileIn( $fname.'-rest' );
 346
 347                 $this->insertTimestamp($s,$rc);
 348
 349                 if( $wgRCShowChangedSize ) {
 350                         $s .= ( $rc->getCharacterDifference() == '' ? '' : $rc->getCharacterDifference() . ' . . ' );
 351                 }
 352                 # User tool links
 353                 $this->insertUserRelatedLinks($s,$rc);
 354                 # Log action text (if any)
 355                 $this->insertAction($s, $rc);
 356                 # Edit or log comment
 357                 $this->insertComment($s, $rc);
 358
 359                 # Mark revision as deleted if so
 360                 if ( !$rc_log_type && $this->isDeleted($rc,Revision::DELETED_TEXT) )
 361                    $s .= ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 362                 if($rc->numberofWatchingusers > 0) {
 363                         $s .= ' ' . wfMsg('number_of_watching_users_RCview',  $wgContLang->formatNum($rc->numberofWatchingusers));
 364                 }
 365
 366                 $s .= "</li>\n";
 367
 368                 wfProfileOut( $fname.'-rest' );
 369
 370                 wfProfileOut( $fname );
 371                 return $s;
 372         }
 373 }
 374
 375
 376 /**
 377  * Generate a list of changes using an Enhanced system (use javascript).
 378  */
 379 class EnhancedChangesList extends ChangesList {
 380         /**
 381          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 382          */
 383         public function recentChangesLine( &$baseRC, $watched = false ) {
 384                 global $wgLang, $wgContLang, $wgUser;
 385
 386                 # Create a specialised object
 387                 $rc = RCCacheEntry::newFromParent( $baseRC );
 388
 389                 # Extract fields from DB into the function scope (rc_xxxx variables)
 390                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 391                 extract( $rc->mAttribs );
 392                 $curIdEq = 'curid=' . $rc_cur_id;
 393
 394                 # If it's a new day, add the headline and flush the cache
 395                 $date = $wgLang->date( $rc_timestamp, true);
 396                 $ret = '';
 397                 if( $date != $this->lastdate ) {
 398                         # Process current cache
 399                         $ret = $this->recentChangesBlock();
 400                         $this->rc_cache = array();
 401                         $ret .= "<h4>{$date}</h4>\n";
 402                         $this->lastdate = $date;
 403                 }
 404
 405                 # Should patrol-related stuff be shown?
 406                 if( $wgUser->useRCPatrol() ) {
 407                         $rc->unpatrolled = !$rc_patrolled;
 408                 } else {
 409                         $rc->unpatrolled = false;
 410                 }
 411
 412                 $showdifflinks = true;
 413                 # Make article link
 414                 // Page moves
 415                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 416                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 417                         $clink = wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 418                           $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 419                 // Log entries (old format) and special pages
 420                 } elseif( $rc_namespace == NS_SPECIAL ) {
 421                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 422                         if ( $specialName == 'Log' ) {
 423                                 # Log updates, etc
 424                                 $logname = LogPage::logName( $logtype );
 425                                 $clink = '(' . $this->skin->makeKnownLinkObj( $rc->getTitle(), $logname ) . ')';
 426                         } else {
 427                                 wfDebug( "Unexpected special page in recentchanges\n" );
 428                                 $clink = '';
 429                         }
 430                 // New unpatrolled pages
 431                 } else if( $rc->unpatrolled && $rc_type == RC_NEW ) {
 432                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '', "rcid={$rc_id}" );
 433                 // Log entries
 434                 } else if( $rc_type == RC_LOG ) {
 435                         $clink = $this->skin->makeLinkObj( $rc->getTitle(), '' );
 436                 // Edits
 437                 } else {
 438                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '' );
 439                 }
 440
 441                 # Don't show unusable diff links
 442                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 443                         $showdifflinks = false;
 444                 }
 445
 446                 $time = $wgContLang->time( $rc_timestamp, true, true );
 447                 $rc->watched = $watched;
 448                 $rc->link = $clink;
 449                 $rc->timestamp = $time;
 450                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 451
 452                 # Make "cur" and "diff" links
 453                 if( $rc->unpatrolled ) {
 454                         $rcIdQuery = "&rcid={$rc_id}";
 455                 } else {
 456                         $rcIdQuery = '';
 457                 }
 458                 $querycur = $curIdEq."&diff=0&oldid=$rc_this_oldid";
 459                 $querydiff = $curIdEq."&diff=$rc_this_oldid&oldid=$rc_last_oldid$rcIdQuery";
 460                 $aprops = ' tabindex="'.$baseRC->counter.'"';
 461                 $curLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['cur'], $querycur, '' ,'', $aprops );
 462
 463                 # Make "diff" an "cur" links
 464                 if( !$showdifflinks ) {
 465                    $curLink = $this->message['cur'];
 466                    $diffLink = $this->message['diff'];
 467                 } else if( $rc_type == RC_NEW || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 468                         if( $rc_type != RC_NEW ) {
 469                                 $curLink = $this->message['cur'];
 470                         }
 471                         $diffLink = $this->message['diff'];
 472                 } else {
 473                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'], $querydiff, '' ,'', $aprops );
 474                 }
 475
 476                 # Make "last" link
 477                 if( !$showdifflinks ) {
 478                     $lastLink = $this->message['last'];
 479                 } else if( $rc_last_oldid == 0 || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 480                         $lastLink = $this->message['last'];
 481                 } else {
 482                         $lastLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['last'],
 483                         $curIdEq.'&diff='.$rc_this_oldid.'&oldid='.$rc_last_oldid . $rcIdQuery );
 484                 }
 485
 486                 # Make user links
 487                 if( $this->isDeleted($rc,Revision::DELETED_USER) ) {
 488                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-user') . '</span>';
 489                 } else {
 490                         $rc->userlink = $this->skin->userLink( $rc_user, $rc_user_text );
 491                         $rc->usertalklink = $this->skin->userToolLinks( $rc_user, $rc_user_text );
 492                 }
 493
 494                 $rc->lastlink = $lastLink;
 495                 $rc->curlink  = $curLink;
 496                 $rc->difflink = $diffLink;
 497
 498                 # Put accumulated information into the cache, for later display
 499                 # Page moves go on their own line
 500                 $title = $rc->getTitle();
 501                 $secureName = $title->getPrefixedDBkey();
 502                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 503                         # Use an @ character to prevent collision with page names
 504                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 505                 } else {
 506                         global $wgRCTypeGroupedLogs;
 507                         # Some logs are best grouped by type (block,rights)
 508                         if( $rc_type == RC_LOG && in_array($rc_log_type,$wgRCTypeGroupedLogs) ){
 509                                 $secureName = SpecialPage::getTitleFor( 'Log', $rc_log_type )->getPrefixedDBkey();
 510                         }
 511                         if( !isset( $this->rc_cache[$secureName] ) ) {
 512                                 $this->rc_cache[$secureName] = array();
 513                         }
 514                         array_push( $this->rc_cache[$secureName], $rc );
 515                 }
 516                 return $ret;
 517         }
 518
 519         /**
 520          * Enhanced RC group
 521          */
 522         protected function recentChangesBlockGroup( $block ) {
 523                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 524                 $r = '<table cellpadding="0" cellspacing="0" border="0" style="background: none"><tr>';
 525
 526                 # Collate list of users
 527                 $userlinks = array();
 528                 # Other properties
 529                 $unpatrolled = false;
 530                 $isnew = false;
 531                 $curId = $currentRevision = 0;
 532                 # Some catalyst variables...
 533                 $namehidden = true;
 534                 $alllogs = true;
 535                 foreach( $block as $rcObj ) {
 536                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 537                         if( $rcObj->mAttribs['rc_new'] ) {
 538                                 $isnew = true;
 539                         }
 540                         // If all log actions to this page were hidden, then don't
 541                         // give the name of the affected page for this block!
 542                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 543                                 $namehidden = false;
 544                         }
 545                         $u = $rcObj->userlink;
 546                         if( !isset( $userlinks[$u] ) ) {
 547                                 $userlinks[$u] = 0;
 548                         }
 549                         if( $rcObj->unpatrolled ) {
 550                                 $unpatrolled = true;
 551                         }
 552                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 553                                 $alllogs = false;
 554                         }
 555                         # Get the latest entry with a page_id and oldid
 556                         # since logs may not have these.
 557                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 558                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 559                         }
 560                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 561                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 562                         }
 563
 564                         $bot = $rcObj->mAttribs['rc_bot'];
 565                         $userlinks[$u]++;
 566                 }
 567
 568                 # Sort the list and convert to text
 569                 krsort( $userlinks );
 570                 asort( $userlinks );
 571                 $users = array();
 572                 foreach( $userlinks as $userlink => $count) {
 573                         $text = $userlink;
 574                         $text .= $wgContLang->getDirMark();
 575                         if( $count > 1 ) {
 576                                 $text .= ' ('.$count.'&times;)';
 577                         }
 578                         array_push( $users, $text );
 579                 }
 580
 581                 $users = ' <span class="changedby">[' . implode( $this->message['semicolon-separator'] . ' ', $users ) . ']</span>';
 582
 583                 # Arrow
 584                 $rci = 'RCI'.$this->rcCacheIndex;
 585                 $rcl = 'RCL'.$this->rcCacheIndex;
 586                 $rcm = 'RCM'.$this->rcCacheIndex;
 587                 $toggleLink = "javascript:toggleVisibility('$rci','$rcm','$rcl')";
 588                 $tl  = '<span id="'.$rcm.'"><a href="'.$toggleLink.'">' . $this->sideArrow() . '</a></span>';
 589                 $tl .= '<span id="'.$rcl.'" style="display:none"><a href="'.$toggleLink.'">' . $this->downArrow() . '</a></span>';
 590                 $r .= '<td valign="top" style="white-space: nowrap"><tt>'.$tl.'&nbsp;';
 591
 592                 # Main line
 593                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled, '&nbsp;', $bot );
 594
 595                 # Timestamp
 596                 $r .= '&nbsp;'.$block[0]->timestamp.'&nbsp;</tt></td><td>';
 597
 598                 # Article link
 599                 if( $namehidden ) {
 600                         $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 601                 } else {
 602                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 603                 }
 604
 605                 $r .= $wgContLang->getDirMark();
 606
 607                 $curIdEq = 'curid=' . $curId;
 608                 # Changes message
 609                 $n = count($block);
 610                 static $nchanges = array();
 611                 if ( !isset( $nchanges[$n] ) ) {
 612                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 613                 }
 614                 # Total change link
 615                 $r .= ' ';
 616                 if( !$alllogs ) {
 617                         $r .= '(';
 618                         if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 619                                 $r .= $nchanges[$n];
 620                         } else if( $isnew ) {
 621                                 $r .= $nchanges[$n];
 622                         } else {
 623                                 $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(),
 624                                         $nchanges[$n], $curIdEq."&diff=$currentRevision&oldid=$oldid" );
 625                         }
 626                         $r .= ') . . ';
 627                 }
 628
 629                 # Character difference (does not apply if only log items)
 630                 if( $wgRCShowChangedSize && !$alllogs ) {
 631                         $last = 0;
 632                         $first = count($block) - 1;
 633                         # Some events (like logs) have an "empty" size, so we need to skip those...
 634                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === NULL ) {
 635                                 $last++;
 636                         }
 637                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === NULL ) {
 638                                 $first--;
 639                         }
 640                         # Get net change
 641                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 642                                 $block[$last]->mAttribs['rc_new_len'] );
 643
 644                         if( $chardiff == '' ) {
 645                                 $r .= ' ';
 646                         } else {
 647                                 $r .= ' ' . $chardiff. ' . . ';
 648                         }
 649                 }
 650
 651                 # History
 652                 if( $namehidden || $alllogs ) {
 653                         $r .= '(' . $this->message['history'] . ')';
 654                 } else {
 655                         $r .= '(' . $this->skin->makeKnownLinkObj( $block[0]->getTitle(),
 656                                 $this->message['history'], $curIdEq.'&action=history' ) . ')';
 657                 }
 658
 659                 $r .= $users;
 660                 $r .=$this->numberofWatchingusers($block[0]->numberofWatchingusers);
 661
 662                 $r .= "</td></tr></table>\n";
 663
 664                 # Sub-entries
 665                 $r .= '<div id="'.$rci.'" style="display:none;"><table cellpadding="0" cellspacing="0"  border="0" style="background: none">';
 666                 foreach( $block as $rcObj ) {
 667                         # Get rc_xxxx variables
 668                         // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 669                         extract( $rcObj->mAttribs );
 670
 671                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 672                         $r .= '<tr><td valign="top">';
 673                         $r .= '<tt>'.$this->spacerIndent() . $this->spacerIndent();
 674                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
 675                         $r .= '&nbsp;</tt></td><td valign="top">';
 676
 677                         $o = '';
 678                         if( $rc_this_oldid != 0 ) {
 679                                 $o = 'oldid='.$rc_this_oldid;
 680                         }
 681                         # Revision link
 682                         if( $rc_type == RC_LOG ) {
 683                                 $link = '<tt>'.$rcObj->timestamp.'</tt> ';
 684                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 685                                 $link = '<span class="history-deleted"><tt>'.$rcObj->timestamp.'</tt></span> ';
 686                         } else {
 687                                 $link = '<tt>'.$this->skin->makeKnownLinkObj( $rcObj->getTitle(), $rcObj->timestamp, $curIdEq.'&'.$o ).'</tt>';
 688                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 689                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 690                         }
 691                         $r .= $link;
 692
 693                         if ( !$rc_type == RC_LOG || $rc_type == RC_NEW ) {
 694                                 $r .= ' (';
 695                                 $r .= $rcObj->curlink;
 696                                 $r .= $this->message['semicolon-separator'] . ' ';
 697                                 $r .= $rcObj->lastlink;
 698                                 $r .= ')';
 699                         }
 700                         $r .= ' . . ';
 701
 702                         # Character diff
 703                         if( $wgRCShowChangedSize ) {
 704                                 $r .= ( $rcObj->getCharacterDifference() == '' ? '' : $rcObj->getCharacterDifference() . ' . . ' ) ;
 705                         }
 706                         # User links
 707                         $r .= $rcObj->userlink;
 708                         $r .= $rcObj->usertalklink;
 709                         // log action
 710                         parent::insertAction( $r, $rcObj );
 711                         // log comment
 712                         parent::insertComment( $r, $rcObj );
 713                         # Mark revision as deleted
 714                         if( !$rc_log_type && $this->isDeleted($rcObj,Revision::DELETED_TEXT) ) {
 715                                 $r .= ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
 716                         }
 717
 718                         $r .= "</td></tr>\n";
 719                 }
 720                 $r .= "</table></div>\n";
 721
 722                 $this->rcCacheIndex++;
 723                 return $r;
 724         }
 725
 726         protected function maybeWatchedLink( $link, $watched=false ) {
 727                 if( $watched ) {
 728                         // FIXME: css style might be more appropriate
 729                         return '<strong class="mw-watched">' . $link . '</strong>';
 730                 } else {
 731                         return $link;
 732                 }
 733         }
 734
 735         /**
 736          * Generate HTML for an arrow or placeholder graphic
 737          * @param string $dir one of '', 'd', 'l', 'r'
 738          * @param string $alt text
 739          * @return string HTML <img> tag
 740          */
 741         protected function arrow( $dir, $alt='' ) {
 742                 global $wgStylePath;
 743                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 744                 $encAlt = htmlspecialchars( $alt );
 745                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" />";
 746         }
 747
 748         /**
 749          * Generate HTML for a right- or left-facing arrow,
 750          * depending on language direction.
 751          * @return string HTML <img> tag
 752          */
 753         protected function sideArrow() {
 754                 global $wgContLang;
 755                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
 756                 return $this->arrow( $dir, '+' );
 757         }
 758
 759         /**
 760          * Generate HTML for a down-facing arrow
 761          * depending on language direction.
 762          * @return string HTML <img> tag
 763          */
 764         protected function downArrow() {
 765                 return $this->arrow( 'd', '-' );
 766         }
 767
 768         /**
 769          * Generate HTML for a spacer image
 770          * @return string HTML <img> tag
 771          */
 772         protected function spacerArrow() {
 773                 return $this->arrow( '', ' ' );
 774         }
 775
 776         /**
 777          * Add a set of spaces
 778          * @return string HTML <td> tag
 779          */
 780         protected function spacerIndent() {
 781                 return '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
 782         }
 783
 784         /**
 785          * Enhanced RC ungrouped line.
 786          * @return string a HTML formated line (generated using $r)
 787          */
 788         protected function recentChangesBlockLine( $rcObj ) {
 789                 global $wgContLang, $wgRCShowChangedSize;
 790
 791                 # Get rc_xxxx variables
 792                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 793                 extract( $rcObj->mAttribs );
 794                 $curIdEq = 'curid='.$rc_cur_id;
 795
 796                 $r = '<table cellspacing="0" cellpadding="0" border="0" style="background: none"><tr>';
 797
 798                 $r .= '<td valign="top" style="white-space: nowrap"><tt>' . $this->spacerArrow() . '&nbsp;';
 799
 800                 # Flag and Timestamp
 801                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 802                         $r .= '&nbsp;&nbsp;&nbsp;&nbsp;'; // 4 flags -> 4 spaces
 803                 } else {
 804                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
 805                 }
 806                 $r .= '&nbsp;'.$rcObj->timestamp.'&nbsp;</tt></td><td>';
 807
 808                 # Article or log link
 809                 if( $rc_log_type ) {
 810                         $logtitle = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
 811                         $logname = LogPage::logName( $rc_log_type );
 812                         $r .= '(' . $this->skin->makeKnownLinkObj($logtitle, $logname ) . ')';
 813                 } else if( !$this->userCan($rcObj,Revision::DELETED_TEXT) ) {
 814                         $r .= '<span class="history-deleted">' . $rcObj->link . '</span>';
 815                 } else {
 816                         $r .= $this->maybeWatchedLink( $rcObj->link, $rcObj->watched );
 817                 }
 818
 819                 # Diff and hist links
 820                 if ( $rc_type != RC_LOG ) {
 821                    $r .= ' ('. $rcObj->difflink . $this->message['semicolon-separator'] . ' ';
 822                    $r .= $this->skin->makeKnownLinkObj( $rcObj->getTitle(), wfMsg( 'hist' ), $curIdEq.'&action=history' ) . ')';
 823                 }
 824                 $r .= ' . . ';
 825
 826                 # Character diff
 827                 if( $wgRCShowChangedSize ) {
 828                         $r .= ( $rcObj->getCharacterDifference() == '' ? '' : '&nbsp;' . $rcObj->getCharacterDifference() . ' . . ' ) ;
 829                 }
 830
 831                 # User/talk
 832                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
 833
 834                 # Log action (if any)
 835                 if( $rc_log_type ) {
 836                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
 837                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 838                         } else {
 839                                 $r .= ' ' . LogPage::actionText( $rc_log_type, $rc_log_action, $rcObj->getTitle(), $this->skin, LogPage::extractParams($rc_params), true, true );
 840                         }
 841                 }
 842
 843                 # Edit or log comment
 844                 if( $rc_type != RC_MOVE && $rc_type != RC_MOVE_OVER_REDIRECT ) {
 845                         // log comment
 846                         if ( $this->isDeleted($rcObj,LogPage::DELETED_COMMENT) ) {
 847                            $r .= ' <span class="history-deleted">' . wfMsg('rev-deleted-comment') . '</span>';
 848                         } else {
 849                           $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 850                         }
 851                 }
 852
 853                 # Show how many people are watching this if enabled
 854                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
 855
 856                 $r .= "</td></tr></table>\n";
 857                 return $r;
 858         }
 859
 860         /**
 861          * If enhanced RC is in use, this function takes the previously cached
 862          * RC lines, arranges them, and outputs the HTML
 863          */
 864         protected function recentChangesBlock() {
 865                 if( count ( $this->rc_cache ) == 0 ) {
 866                         return '';
 867                 }
 868                 $blockOut = '';
 869                 foreach( $this->rc_cache as $block ) {
 870                         if( count( $block ) < 2 ) {
 871                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 872                         } else {
 873                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 874                         }
 875                 }
 876
 877                 return '<div>'.$blockOut.'</div>';
 878         }
 879
 880         /**
 881          * Returns text for the end of RC
 882          * If enhanced RC is in use, returns pretty much all the text
 883          */
 884         public function endRecentChangesList() {
 885                 return $this->recentChangesBlock() . parent::endRecentChangesList();
 886         }
 887
 888 }